Massachusetts: 1-800-233-5325 and 911Rhode Island: 1-800-640-1595 and 911
New York:
Long Island and the Rockaways:
1-800-490-0045 and 911
Metro NY: 911 and 1-718-643-4050
Upstate NY: 1-800-892-2345 and 911

Always notify 811 well in advance of digging.
State law requires you to contact 811 by phone or online, well in advance of digging or moving earth in any way – even for small jobs. This free service will notify member utilities near your dig site to mark the location of their underground lines, so you can dig a safe distance away from them.